Installation auxiliary device for facilitating installation of sensing device and method therefor

Abstract

An auxiliary device for facilitating the installation of a sensing device and a method therefor are disclosed, and the installation support device includes a main body, a first light source assembly and a second light source assembly. The main body has a clamping mechanism configured for mounting the main body onto the sensing device, the first light source assembly and the second light source assembly are disposed on the main body and has at least one solid state light source, and the first light source assembly projects a first pattern along a first projecting direction, and the second light source assembly projects a second pattern along a second projecting direction. The two projecting directions are crossed each other at a predetermined distance, and whether the sensing device is installed at a desired position is determined according to a relative position between the first pattern and the second pattern.

What is claimed is: 
     
       1. An installation auxiliary device for facilitating an installation of a sensing device, the installation auxiliary device comprising:
 a main body having a clamping mechanism configured for mounting the main body onto the sensing device; 
 a first light source assembly disposed on the main body and the first light source assembly having at least one solid state light source, wherein the first light source assembly projects a first pattern along a first projecting direction; and 
 a second light source assembly disposed on the main body and the second light source assembly having at least one solid state light source, wherein the second light source assembly projects a second pattern along a second projecting direction; wherein the first projecting direction and the second projecting direction are crossed each other at a predetermined distance, and whether the sensing device is installed at a desired position is determined according to a relative position between the first pattern and the second pattern. 
 
     
     
       2. The installation auxiliary device according to  claim 1 , wherein the first pattern and the second pattern overlap each other and have the same size, the sensing distance is the same as the predetermined distance, and a sensing range of the sensing device is the same as a range covered by the first pattern and the second pattern. 
     
     
       3. The installation auxiliary device according to  claim 1 , wherein the main body comprises a slot corresponding to a protruding rib of the sensing device and engaging with the protruding rib so as to fix the position between the installation auxiliary device and the sensing device. 
     
     
       4. The installation auxiliary device according to  claim 1 , wherein the first pattern and the second pattern are composed of dotted lines. 
     
     
       5. The installation auxiliary device according to  claim 1 , wherein the first pattern and the second pattern are one of quadrangle, circle and triangle. 
     
     
       6. The installation auxiliary device according to  claim 1 , wherein the first light source assembly comprises four solid state light sources, and the second light source assembly comprises four solid state light sources. 
     
     
       7. The installation auxiliary device according to  claim 1 , wherein the first light source assembly comprises one solid state light source and a photo mask disposed thereon, and the second light source assembly comprises four solid state light sources. 
     
     
       8. A method for adjusting a sensing distance and a sensing range of a sensing device by using an installation auxiliary device, wherein the installation auxiliary device is detachably mounted on the sensing device and comprises a main body, a first light source assembly and a second light source assembly, and the first light source assembly and the second light source assembly are disposed on the main body, the method comprising the following steps:
 (a) allowing the first light source assembly to project a first pattern along a first projecting direction and the second light source assembly to project a second pattern along a second projecting direction, wherein the first projecting direction and the second projecting direction are crossed each other at a predetermined distance; 
 (b) analyzing a relative position between the first pattern and the second pattern; 
 (c) determining whether the first pattern and the second pattern overlap each other and have the same size, wherein if the result is true, the sensing distance is the same as the predetermined distance and the sensing range is the same as a range covered by the first pattern and the second pattern, and the installation of the sensing device is performed; 
 (d) if the result of step (c) is false, then determining whether the first pattern is larger than the second pattern and covers the second pattern, wherein if the result is true, the sensing distance exceeds the predetermined distance and the position of the sensing device is adjusted for shortening the distance between the sensing device and the ground, after that, back to the step (b); 
 (e) if the result of step (d) is false, the sensing distance is within the predetermined distance, then determining whether a shorter sensing distance and a narrower sensing range are acceptable, wherein if the result is true, the installation of the sensing device is performed; and 
 (f) if the result of step (e) is false, the position of the sensing device is adjusted for lengthening the distance between the sensing device and the ground, after that, back to the step (b) and repeating the steps (b) to (f) until the installation of the sensing device is performed. 
 
     
     
       9. The method according to  claim 8 , wherein the first pattern and the second pattern are one of quadrangle, circle and triangle. 
     
     
       10. The method according to  claim 8 , wherein the colors of the beams projected from the first light source assembly and the second light source assembly are different. 
     
     
       11. The method according to  claim 8 , wherein the first pattern and the second pattern are composed of dotted lines.